Ball-bearing.



H. BARTHEL. BALL BEARING. APPLICATION FILED JULY 11, 1910.

Patented'Apr. 18; 1911;

H'ERMANN BARTHEL, OF SCHWEINFURT, GERMANY.

BALL-BEARING.

Specification of Letters Patent.

Patented Apr. 18, 1911.

Application filed July 11, 1910. Serial No. 571,451.

To all whom it may 001mm:

Be it knownJthat I, HERMArIN BAnTnnL, a subject of the King of Prussia,residing at No. 7 Petersgasse, Schweinfurt, Germany, have invented newand useful Improvements in Ball-Bearings, of which the following is aspecification.

My invention relates to ball-bearings, and a primary object is toprovide therefor an improved cage comprising two U-shaped rings placedback to back and in which apertures for receiving the balls are stam ed.By means of this special construction 0 my ball cage various importantadvantages are obtained :-They can be made cheaply of sheet metal bystamping and pressing; the special cross-sectional shape of the ringsassures great stability; small ru tured parts of balls can be removedreadily from the, bearing and all the balls are visible from theoutside, 'so that when examining the bearings it can readily beascertained whether they contain any defective balls; in spite of thegreat lightness of the rings the ba ls are inclosed both in a lateraland radial and also in a circular direction; the contact zones betweenthe balls and the guide rings are very small, as the balls only lieagainst the narrow circular surfaces of the ca e; and a face of doublestrength is formed in the central plane of the bearing, in which thecage is principally subjected to stresses, so that in spite of its greatlightness the cage is capable of olfering great resistance.

Some illustrative embodiments of my invention are represented by way ofexample in the accompanying drawing, wherein Figure 1 is a verticalsection throu h a bearing, and Fig. 2 a side elevation o the same; Fig.3'is an elevation of a rin forming onehalf of my cage as seen looiing atthe bottom of this ring; Fig. 4: is a development of a portion of thecage in section in the plane A--A in Fig.1, and Fig.5 illus trates amodified form of cage shown similarly.

Referring to the drawing, my improved cage made of sheet metal andhaving stamped apertures nconsists of two rings m, m of U-shapedsection; these are placed with their backs g, 9 one against the otherand connected together by rivets h or the like. The-two halves maybe-united after the balls 0 have been placed between the ball races a, bin a manner well-known in itself.

According to Fig. 4 the sides'of the two rings fitted together formingthe cage are plans and according to Fig.- 5 wave-shaped, whereby theweight of the cage is still more decreased.

I claim 1. In a ball-bearing, the combination with a plurality of balls,of a cage comprising two rings of U-shaped section secured back to backand having apertures for receiving said balls.

2. A cage of the character described, comprising in combination tworings of U- shaped section secured back to back and havingcentrally-arranged apertures, thesides of said rings being wave-shaped,substantially as shown.

3. A device of the character described comprising a plurality of balls,duplicate U-shaped rings having their portions, answering to the bottomof the U, secured together, said bottom formin portions and the lateralportions of the U eing produced with openings receiving or forming seatsfor said balls.

4. A device of the character described, comprising a plurality of balls,duplicate U-shaped rings having their portions answering to the bottomof the U secured together, said bottom forming portions and the lateralportions answering to the bottom of the U being produced with openingsforming seats for said balls, and concentric members receiving betweenthem said balls and said rings.

In witness whereof I have hereunto signed my name this 27th day of May,1910, in the presence'of two subscribing witnesses.

HERMANN BARTHEL.

Witnesses HENRY Hasrnn, WOLDEMAR I-IAUPT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

